/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.lvyh.lightframe.tracer.core.reporter;

import com.google.gson.Gson;
import com.lvyh.lightframe.tracer.core.SimpleSpan;
import com.lvyh.lightframe.tracer.core.enums.ReporterType;
import com.lvyh.lightframe.tracer.core.internals.ConfigInjector;
import com.lvyh.lightframe.tracer.core.internals.HttpClientManager;
import com.lvyh.lightframe.tracer.core.zipkin.ZipkinSpanConvertor;
import com.lvyh.lightframe.tracer.core.zipkin.ZipkinTraceSpan;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author lvyh 2021/06/19.
 */
public class ZipkinRemoteReporter extends AbstractReporter {
    private static final Logger logger = LoggerFactory.getLogger(ZipkinRemoteReporter.class);
    private static HttpClientManager httpClientManager;
    private static ZipkinSpanConvertor zipkinSpanConvertor;
    private String baseUrl;

    static {
        httpClientManager = ConfigInjector.getInstance(HttpClientManager.class);
        zipkinSpanConvertor = ConfigInjector.getInstance(ZipkinSpanConvertor.class);
    }

    public ZipkinRemoteReporter(String baseUrl) {
        this.baseUrl = baseUrl;
    }

    @Override
    public String getReportRemoteUrl() {
        return baseUrl;
    }

    @Override
    public String getReporterType() {
        return ReporterType.ZIPKIN.getKey();
    }

    @Override
    public void doReport(SimpleSpan span) {
        try {
            ZipkinTraceSpan zipkinSpan = zipkinSpanConvertor.convertToZipkinSpan(span);

            HttpPost post = new HttpPost(baseUrl);
            post.setHeader("Content-Type", "application/json");
            post.setHeader("charset", "UTF-8");

            String body = new Gson().toJson(zipkinSpan);
            body = "[" + body + "]";

            StringEntity entity = new StringEntity(body);
            post.setEntity(entity);

            HttpResponse httpResponse = httpClientManager.getHttpClient().execute(post);
            logger.info("Trace data report zipkin result:{}", httpResponse);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
